Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
des developpements » deux developpements, de developpement, et developpements
developpements l » developpements de, developpement il, developpement la
formulation der » formulation des, formulation de, formulation over
4 communication » 3 communication, 5.4 communication, de communication
barriere des » barrieren des, karriere des, barriere der
l afrique » en afrique
does 4 » does _, does a, does e

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies _ formulation der does 4 communication barriere des developpements l afrique.*.